CA2287022A1 - Methods and apparatus for wireless communication using orthogonal frequency division multiplexing - Google Patents

Methods and apparatus for wireless communication using orthogonal frequency division multiplexing Download PDF

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Publication number
CA2287022A1
CA2287022A1 CA002287022A CA2287022A CA2287022A1 CA 2287022 A1 CA2287022 A1 CA 2287022A1 CA 002287022 A CA002287022 A CA 002287022A CA 2287022 A CA2287022 A CA 2287022A CA 2287022 A1 CA2287022 A1 CA 2287022A1
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Canada
Prior art keywords
separated
time
users
wireless communication
uplink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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CA002287022A
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French (fr)
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CA2287022C (en
Inventor
Syed Aon Mujtaba
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Nokia of America Corp
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Lucent Technologies Inc
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Publication date
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of CA2287022A1 publication Critical patent/CA2287022A1/en
Application granted granted Critical
Publication of CA2287022C publication Critical patent/CA2287022C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Methods and apparatus for wireless communication in systems such as omni-beam and narrow-beam fixed wireless loop (FWL) systems. In a first technique in accordance with the invention, referred to as code division duplex (CDD) time-slotted CDMA, uplink and downlink portions of the system are separated using code division duplexing, while the users within a given cell are also separated using codes, e.g., using time-slotted CDMA. In a second technique in accordance with the invention, referred to as time division duplex (TDD) time-slotted CDMA, uplink and downlink portions of the system are separated using time division duplexing, e.g., time slots, while the users in a given cell are separated using codes, e.g., time-slotted CDMA. Both the CDD and TDD techniques may make use of an electronically-steered beam which is designed to provide simultaneous coverage within a given cell for two or more users separated by codes. In a third technique in accordance with the invention, referred to as orthogonal frequency division multiplexing (OFDM), uplink and downlink portions of the system are separated in frequency, while the users are, e.g., also separated in frequency.
CA002287022A 1998-11-25 1999-10-20 Methods and apparatus for wireless communication using orthogonal frequency division multiplexing Expired - Fee Related CA2287022C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/200,523 US7020071B2 (en) 1998-11-25 1998-11-25 Methods and apparatus for wireless communication using orthogonal frequency division multiplexing
US09/200,523 1998-11-25

Publications (2)

Publication Number Publication Date
CA2287022A1 true CA2287022A1 (en) 2000-05-25
CA2287022C CA2287022C (en) 2004-06-08

Family

ID=22742070

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002287022A Expired - Fee Related CA2287022C (en) 1998-11-25 1999-10-20 Methods and apparatus for wireless communication using orthogonal frequency division multiplexing

Country Status (5)

Country Link
US (1) US7020071B2 (en)
EP (1) EP1005190B1 (en)
JP (1) JP2000165939A (en)
CA (1) CA2287022C (en)
DE (1) DE69934866T2 (en)

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US7933344B2 (en) * 2006-04-25 2011-04-26 Mircosoft Corporation OFDMA based on cognitive radio
US7634016B2 (en) * 2006-04-25 2009-12-15 Microsoft Corporation Variable OFDM subchannel coding and modulation
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US7929623B2 (en) * 2007-03-30 2011-04-19 Microsoft Corporation FEC in cognitive multi-user OFDMA
US7970085B2 (en) 2007-05-08 2011-06-28 Microsoft Corporation OFDM transmission and reception for non-OFDMA signals
US8374130B2 (en) 2008-01-25 2013-02-12 Microsoft Corporation Orthogonal frequency division multiple access with carrier sense
US8855087B2 (en) * 2008-12-18 2014-10-07 Microsoft Corporation Wireless access point supporting control by multiple applications
JP5637681B2 (en) * 2009-12-16 2014-12-10 キヤノン株式会社 Control device, relay device, control method thereof, and program
US9086472B2 (en) * 2012-09-26 2015-07-21 Gennadii Ivtsenkov Multi-transceiver RF alert system for preventing hunting accidents
US11191097B2 (en) * 2015-08-17 2021-11-30 Qualcomm Incorporated Reception of multiple uplink control messages at a same time slot
US10021538B2 (en) * 2015-10-06 2018-07-10 Mediatek Inc. Coordination and provision of non-interfering long-range low-power wireless communications
JP6748777B2 (en) * 2016-08-11 2020-09-02 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ Base station, user equipment, and wireless communication method
CN109803371B (en) * 2017-11-17 2023-06-09 华为技术有限公司 Communication processing method and device
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Also Published As

Publication number Publication date
CA2287022C (en) 2004-06-08
DE69934866D1 (en) 2007-03-08
US7020071B2 (en) 2006-03-28
EP1005190A2 (en) 2000-05-31
JP2000165939A (en) 2000-06-16
DE69934866T2 (en) 2007-07-05
US20030193925A1 (en) 2003-10-16
EP1005190B1 (en) 2007-01-17
EP1005190A3 (en) 2003-10-29

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